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    <title>Document</title>
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  <body></body>
  <script>
    const list = [1, 2, 3];
    // const a = list[0];
    // const b = list[1];
    // const c = list[2];
    // 等价于
    // const [a, b, c] = list;

    // 不是数组有多少个数，就需要都解构

    // const a = list[0];
    // const b = list[1];
    // 等价于
    const [a, b] = list;
    console.log('a,b -----> ', a, b);
  </script>
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